Description: This beamline can provide IR light that is 100 – 1000 times brighter than standard laboratory IR sources, allowing the spectroscopic study of molecules with much higher precision and sensitivity; coupled to a Bruker IFS 125 HR with a 9-compartment-scanning arm, spectral resolution ≥ 0.001 cm^-1 can be achieved.

Endstation(s):

• Bruker IFS 125 HR, 9 compartments

Techniques:

Fourier Transform Absorption Spectroscopy:

• Gas phase
  • Stable
    • 2 m cold multi-reflection (MR) cell
    • 0.3 m ambient MR cell

Optics: The first collecting mirror is in a specially designed dipole vacuum chamber. Point to point focusing optics transfer the IR light first through a thin diamond window that separates UHV from rough vacuum and then into the high resolution Bruker spectrometer.

Technical beamline one-pager (PDF)

Far-IR hutch showing the IFS125 HR, the 2m multipass cell and the beamline

Left to Right: Tim May; Robert McKellar; Tom Ellis; Dominique Appadoo